Vulnerabilities > CVE-2016-2933 - Path Traversal vulnerability in IBM Bigfix Remote Control 9.1.2

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
HIGH
Confidentiality impact
HIGH
Integrity impact
NONE
Availability impact
NONE
network
low complexity
ibm
CWE-22
nessus

Summary

Directory traversal vulnerability in IBM BigFix Remote Control before 9.1.3 allows remote authenticated administrators to read arbitrary files via a crafted request.

Vulnerable Configurations

Part Description Count
Application
Ibm
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Nessus

NASL familyCGI abuses
NASL idIBM_BIGFIX_REMOTE_CONTROL_9_1_3.NASL
descriptionThe version of IBM BigFix Remote Control running on the remote host is prior to 9.1.3. It is, therefore, affected by the multiple vulnerabilities : - Multiple integer overflow conditions exist in the bundled version of OpenSSL in files s3_srvr.c, ssl_sess.c, and t1_lib.c due to improper use of pointer arithmetic for heap-buffer boundary checks. An unauthenticated, remote attacker can exploit this to cause a denial of service. (CVE-2016-2177) - An information disclosure vulnerability exists in the bundled version of OpenSSL in the dsa_sign_setup() function in dsa_ossl.c due to a failure to properly ensure the use of constant-time operations. An unauthenticated, remote attacker can exploit this, via a timing side-channel attack, to disclose DSA key information. (CVE-2016-2178) - A vulnerability exists, known as SWEET32, in the bundled version of OpenSSL in the 3DES and Blowfish algorithms due to the use of weak 64-bit block ciphers by default. A man-in-the-middle attacker who has sufficient resources can exploit this vulnerability, via a
last seen2020-06-01
modified2020-06-02
plugin id96145
published2016-12-27
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/96145
titleIBM BigFix Remote Control < 9.1.3 Multiple Vulnerabilities (SWEET32)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(96145);
  script_version("1.10");
  script_cvs_date("Date: 2019/11/13");

  script_cve_id(
    "CVE-2016-2177",
    "CVE-2016-2178",
    "CVE-2016-2183",
    "CVE-2016-2928",
    "CVE-2016-2931",
    "CVE-2016-2932",
    "CVE-2016-2933",
    "CVE-2016-2934",
    "CVE-2016-2935",
    "CVE-2016-2943",
    "CVE-2016-6304",
    "CVE-2016-6306"
  );
  script_bugtraq_id(
    91081,
    91319,
    92630,
    93150,
    93153,
    94983,
    94984,
    94986,
    94987,
    94989
  );
  script_xref(name:"IAVB", value:"2016-B-0191");

  script_name(english:"IBM BigFix Remote Control < 9.1.3 Multiple Vulnerabilities (SWEET32)");
  script_summary(english:"Checks the version of IBM BigFix Remote Control.");

  script_set_attribute(attribute:"synopsis", value:
"An application running on the remote web server is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of IBM BigFix Remote Control running on the remote host is
prior to 9.1.3. It is, therefore, affected by the multiple
vulnerabilities :

  - Multiple integer overflow conditions exist in the
    bundled version of OpenSSL in files s3_srvr.c,
    ssl_sess.c, and t1_lib.c due to improper use of pointer
    arithmetic for heap-buffer boundary checks. An
    unauthenticated, remote attacker can exploit this to
    cause a denial of service. (CVE-2016-2177)

  - An information disclosure vulnerability exists in the
    bundled version of OpenSSL in the dsa_sign_setup()
    function in dsa_ossl.c due to a failure to properly
    ensure the use of constant-time operations. An
    unauthenticated, remote attacker can exploit this, via a
    timing side-channel attack, to disclose DSA key
    information. (CVE-2016-2178)

  - A vulnerability exists, known as SWEET32, in the bundled
    version of OpenSSL in the 3DES and Blowfish algorithms
    due to the use of weak 64-bit block ciphers by default.
    A man-in-the-middle attacker who has sufficient
    resources can exploit this vulnerability, via a
    'birthday' attack, to detect a collision that leaks the
    XOR between the fixed secret and a known plaintext,
    allowing the disclosure of the secret text, such as
    secure HTTPS cookies, and possibly resulting in the
    hijacking of an authenticated session. (CVE-2016-2183)

  - An information disclosure vulnerability exists due to
    the inclusion of sensitive information in error logs. An
    authenticated, remote attacker can exploit this to
    disclose information. (CVE-2016-2928)

  - An information disclosure vulnerability exists due to
    the transmission of information in cleartext. A
    man-in-the-middle attacker can exploit this to disclose
    sensitive information. (CVE-2016-2931)

  - An unspecified flaw exists that allows an
    unauthenticated, remote attacker to inject arbitrary XML
    content. (CVE-2016-2932)

  - An information disclosure vulnerability exists due to a
    flaw that allows traversing outside of a restricted
    path. An authenticated, remote attacker can exploit
    this, via a specially crafted request, to disclose
    arbitrary files. (CVE-2016-2933)

  - A cross-site scripting (XSS) vulnerability exists due to
    improper validation of user-supplied input. An
    unauthenticated, remote attacker can exploit this, via a
    specially crafted request, to execute arbitrary script
    code in a user's browser session. (CVE-2016-2934)

  - An unspecified flaw exists that allows an
    unauthenticated, remote attacker to submit invalid HTTP
    requests, resulting in a denial of service condition for
    the broker application. (CVE-2016-2935)

  - An information disclosure vulnerability exists due to
    the storage of information in log files in plaintext. A
    local attacker can exploit this to disclose sensitive
    information. (CVE-2016-2943)

  - A flaw exists in the bundled version of OpenSSL in the
    ssl_parse_clienthello_tlsext() function in t1_lib.c due
    to improper handling of overly large OCSP Status Request
    extensions from clients. An unauthenticated, remote
    attacker can exploit this, via large OCSP Status Request
    extensions, to exhaust memory resources, resulting in a
    denial of service condition. (CVE-2016-6304)

  - An out-of-bounds read error exists the bundled version
    of OpenSSL in the certificate parser that allows an
    unauthenticated, remote attacker to cause a denial of
    service via crafted certificate operations.
    (CVE-2016-6306)

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991882");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991955");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991892");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991876");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991870");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991960");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991951");
  script_set_attribute(attribute:"see_also", value:"http://www-01.ibm.com/support/docview.wss?uid=swg21991896");
  script_set_attribute(attribute:"see_also", value:"https://sweet32.info/");
  script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/blog/blog/2016/08/24/sweet32/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM BigFix Remote Control version 9.1.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-2177");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/27");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:bigfix_remote_control");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:tivoli_remote_control");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ibm_bigfix_remote_control.nbin");
  script_require_keys("installed_sw/IBM BigFix Remote Control");
  script_require_ports("Services/www", 80, 443, 9080, 9443);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("install_func.inc");

app = "IBM BigFix Remote Control";
get_install_count(app_name:app, exit_if_zero:TRUE);

port = get_http_port(default:80, php:TRUE);

install = get_single_install(
  app_name : app,
  port     : port,
  exit_if_unknown_ver : TRUE
);

dir = install['path'];
version = install['version'];
url = build_url(qs:dir, port:port);
fix = "9.1.3";

if (version == "9" || version == "9.1") audit(AUDIT_VER_NOT_GRANULAR, app, port, version);

if (ver_compare(ver:version, fix:fix, strict:FALSE) >= 0)
  audit(AUDIT_WEB_APP_NOT_AFFECTED, app, url, version);

security_report_v4(
    port:port,
    severity:SECURITY_HOLE,
    xss:TRUE,
    extra:
      '\n  URL               : ' + url +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fix +
      '\n'
);